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Commitments and Contingencies (Tables)
12 Months Ended
Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]  
Future Minimum Unconditional Purchase Obligations Future minimum unconditional purchase obligations are as follows:

Year Ending September 30,

 

 

 

 

2021

 

$

343,480

 

2022

 

 

49,457

 

2023

 

 

6,389

 

2024

 

 

27,308

 

2025

 

 

1,859

 

Thereafter

 

 

1,811

 

Total

 

$

430,304